Medical apparatus for hot-air supply



Aug. 4, 1925. 1,548,228

M. VIARD MEDICAL APPARATUS FOR HOT AIR SUPPLY Filed April 25, 1922 Patented Aug, 4, 1925.

ururan STATES MARCEL VIABD, OF BARON, FRANCE,

MEDIQAI APPABJATU$ FOR HOT-AIR SUPPLY,

Application filed. April 2 1922- Serial No 556,395.

To all whom it may concern Be it known that I, MARoEL VIARD, citizen of the French Republic, residing at Baron, Oise, France, have invented certain new and useful Improvements in Medical Apparatus for Hot-Air Supply, of which the following is a specification, reference being had therein to the accompanying draw.- mg.

My invention relates to medical apparatus for hot air supply which are used in the treatment of certain affections such as rheumatism, 1 V

Known types of medical apparatus for delivering hot air are in use which are consti tuted for example of an. air fan causing a current of air to pass overasource of heat such as an alcohol lamp. But apparatus of this kind are attended with a number of drawbacks; among others, the air is supplied at a comparatively low temperature; it is necessary to rotate the air fan by hand, and this will occupy one hand of the operator who is already required to hold the device in the other hand, or in other cases the air fan is mechanically opera-ted, thus requiring for example, the use of electric current. Apparatus is also employed wherein the air is given a'high temperature by making use of the electric current for heating resistances through which the air current is delivered, but such devices require an electric contact device to be located in immeuse of electric current as the source of heat nor as a sourceof power for air-blowing purposes; it is of convenient use in all situations and may be set in operation within a very short time, and has no fragile parts nor is it subject to breakdown for any reason; it has as very reliable working, and the operator will always: have one hand free in case he should be obliged to hold thea-pparatus, and he may even have both hands free where-the device is placed upon a table.

The invention is characterized by the combination of an apparatus adapted to burn combustible vapor emitted under pressure by a liquid which is vaporized by heat, for example, a soldering lamp of a known commerand especially in outlying" cial type, having a chimney which can be removably mounted upon the blowing tube in order to receive the gases of combustion, the said chimney being provided in the interior and for part of the length with a metal tube for the insuffiation of air, which is preferably in coaxial position, so as to be brought to a very high temperature by the gases of combustion surrounding the same and to transmit upon the entire periphery a considerable. amount of heat tothe air which is delivered into it; this air will consequently be heated to a very high temperature, and passes out through the end of the chimney, becoming mixed with the gases of combustion. The insufliation of the air can be obtained by any suitable means, but since the soldering lamp is adapted to operate on a small supply of air in proportion to the total mass of gases of combustion proceeding from the lamp, the invention relates more particularly to a devicev forv air blowing by the mouth having few mechanical parts. The heated air is forced through the chimney preferably by the use of a flexible tube hav ing a mouthpiece at one end and connected at the other end with the tube extending within the chimney.

The following description, together with the accompanying drawings which are given by way of example, sets forth an embodiment of the invention.

Fig. 1 shows a soldering lamp of known type, and the various elements which are to be added thereto in order to constitute a medical apparatus for hot air supply. Fig. 2 is an external'view of the complete apparatus.

L is a soldering lamp of commercial type having the main body 1, blowing tube 2, gasoline needle valve 3, heating vessel for starting purposes 4, and folding base 5.

According to the invention, I provide a sheet of metal chimney G of greater or less length whereof the rear part 6 which is preferably perforated and has for example a flaring end, can be mounted for instance by means of the jaw G upon the blowing tube 2, of the lamp so that the air is allowed to pass freely between the tube 2 and the chimney. In this case the jaw G is provided with a sleeve 7 which is slidable on the tube 2 and comes into contact with the shoulder 8. The said sleeve is integral with the jaws 9 engaging the perforated rear part 6 of the chimney C. An insufflation tube 10 which is provided with the nipple 12 for rubber tube connection is caused to enter the chimney C, Fig. 1, and is extended within the latter for a suitable length 6, occupying preferably the coaxial position. For centering purposes, the tube t is cut in crossshape at the end, and the parts 11 are expanded so as to bear-upon the end of the wall of the chimney.

Fig. 2 shows the apparatus in the opera tive position, with a rubber hose T fitted upon the nipple 12. I

The operation of the said device is as follows: p

The soldering lamp is filled with gasoline and is caused to operate in the known mannerbynieans of a small amount of alcohol which is ignited in the vessel 4, then opening the needle 3; The flame will pass through the chimney C at a very high temperature and will heat the air supply tube t to redness. The air may enter freely through the rear perforations in the chim ney and through the space between the chimney and the sleeve 7, according to the arrow F, and will become mixed with the gases of combustion. The operator blows with the mouth in a moderate manner through the mouthpieceof the tube T; this air is raised to a very high temperature and isdischarged from the end of the tube If; it is mixed with the 'coflumn of gas of combustion which passes through the chimney and draws in air according to the arrow F, and passes out of the end of the chimney, thereby forming a column of hot air ("at about 800 centigrade) having a greater or less length in front of the chimney. Should a local treatment be required, the end of the chimney C may have secured thereto a removable tube of conical shape having a hot air discharge orifice of smaller diameter than the chimney.

The apparatus can be mounted on a table, Fig. 2, and the patient may bring thetreat ed part before the chimney G, and in this case the operator will have both hands free. In all other circumstances, the operator will have one hand free.

Claims: 7

1. A medical apparatus for the supply of hot air comprising in combination, a lamp having a. burner adapted to supply a flame by theconibustion of the vapors of acombustible liquid, a chimney positioned in front of the burner for receiving the flame therefrom, said chimney having perforations in the rear portion thereof, andme'ans providing an additional 'air current to force the heated air through the chimney.

2. A medical apparatus for the supply "of hot air comprising in combination, a lamp having a burner adapted to supply a name by the combustion of the vapors of a conibustible liquid, a chimney positioned in front of the burner for receiving the flame therefrom, said chimney having perfora- 4. A medical apparatus for applying hot air to parts of th'eliuman body, havmg in combination alamp, a chimney, indepen ent resilient means for securing said chimney to said lamp, and an insufiiation tube extendin'g longitudinally within saidch-imney.

5. A medical appartus' for applying hot air to parts of the human body, having in combination a lamp, a chimney havingperforations in oneend thereof, resilient means connecting the chimney to said lamp, an insuliiation tube extending longitudinally within said chimney and having a portion thereof projecting laterally through and beyond the chimney.

6. A medical apparatus for supplying hot air to parts of the human body, having in combination a lamp, a chimney provided witha flaring end, a spring jaw mounted on said lamp and removably engaging said chimney,- said chimney having perforations therein adjacent the flared end, and an insulliation tube having a portion extending longitudinally within the chimney and bent laterally to project from the chimney, and an air supply means connected to the outer portion of the insufliation tube.

7. In combination, a lamp of the class described having a reduced end, a chimney, means for removably securing said chimney to said lamp,- and an insuffiation tube extending longitudinally within said chimney having at one end a plurality of diverging fingers contacting with the inner wall of said chimney.

8. In combination, a lamp of the class described having a reduced end, a chimney, means for removably securing said chimney to said lamp, an insufllation tube extending longitudinally within said chimney having at one end a plurality of diverging fingers contacting with "the inner wall of said chimney, and its opposite end project- 'ing laterally through an opening 'inthe wall of said chimney.

9. A medical apparatus for applyinghot air to parts of the human body, having in combination a lamp provided with a re: duced neck, a container secured to saidlamp adjacent said neck, a chimneyhaving a perforated and fiaredend, a resilient jaw member mounted on said neck adapted to re movably secure said chimney to said lamp, an insufliation tube extending longitudinally Within said chimney, and means for ventilating the interior of said chimney.

10. In combination, a lamp of the class described having a reduced neck, a container secured exteriorly to said lamp, a perforated chimney having a flared end, means for removably securing said flared end to said 19 neck, a control handle projecting laterally from said lamp, a tube longitudinally disposed Within said chimney, said tube having a plurality of diverging fingers contacting with the inner periphery of said chimney and a portion extending laterally through the Wall of said chimney.

In testimony whereof I affix my signature.

MAROEL VIARD. 

